Methane from the Nord Stream pipelines destroyed in September 2022 spread over a large part of the southern Baltic Sea and remained for several months, according to a new study by researchers
Methane from the Nord Stream pipelines destroyed in September 2022 spread over a large part of the southern Baltic Sea and remained for several months, according to a new study by researchers from the University of Gothenburg and the Voice of the Ocean research foundation.
Much of the methane gas from the Nord Stream leak rose directly to the sea surface and into the atmosphere. But some methane remained below the surface and was dispersed by ocean currents.
“The results of our measurements show that methane spread to large parts of the southern Baltic Sea, from the coast of Danish Zealand in the west, to the Polish Gulf of Gdansk in the east,” says Martin Mohrmann, a researcher at Voice of the Ocean, VOTO.
The Voice of the Ocean Foundation deployed gliders just outside the exclusion zone around the leaks to measure methane concentrations over a large area, all the way from the surface to the depths. They continued their measurements for three months after the spill.
To get the most robust estimations, they combined observations from the gliders with surface observations collected by the German research institute IOW from a ferry.
In the initial period following the pipeline explosion, methane
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